EP0006464A2 - Dispositif de mesure de la vitesse d'écoulement à l'aide d'oscillations ultrasoniques - Google Patents

Dispositif de mesure de la vitesse d'écoulement à l'aide d'oscillations ultrasoniques Download PDF

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Publication number
EP0006464A2
EP0006464A2 EP79101689A EP79101689A EP0006464A2 EP 0006464 A2 EP0006464 A2 EP 0006464A2 EP 79101689 A EP79101689 A EP 79101689A EP 79101689 A EP79101689 A EP 79101689A EP 0006464 A2 EP0006464 A2 EP 0006464A2
Authority
EP
European Patent Office
Prior art keywords
frequency
ultrasonic
difference
flow
measuring section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP79101689A
Other languages
German (de)
English (en)
Other versions
EP0006464A3 (fr
Inventor
Valentin Dipl.-Phys. Mágori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0006464A2 publication Critical patent/EP0006464A2/fr
Publication of EP0006464A3 publication Critical patent/EP0006464A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/245—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves
    • G01P5/247—Sing-around-systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters

Definitions

  • the invention relates to a device for measuring flow velocities with the aid of ultrasonic vibrations, in which a first and a second, each consisting of a transmitter and a receiver transducer, are arranged, crossing ultrasonic measuring sections.
  • ultrasonic vibration bundles are transmitted as pulses from a transmitter to a receiver, which uses an electrical signal to report the receipt confirmation to the transmitter, which in turn emits a new ultrasonic vibration bundle.
  • the return frequency results in a vibration in the audible acoustic range, from which the expression "sing-around" originates.
  • the flow velocity results from the difference between the return frequencies.
  • the invention has for its object to provide a device for measuring flow velocities with the aid of ultrasonic vibrations, in which the speed of sound is not included in the measurement result, there are no trigger problems and a relatively low circuit complexity is required.
  • the invention is based on the idea that when ultrasound vibrations are continuously emitted, there is no need for triggering, since no oscillation beams are emitted, and that a frequency setting necessary to achieve a defined phase position of the respective received signal in relation to the respective transmit signal can be used for this purpose to determine the flow velocity indirectly.
  • the stated object is achieved by a device for measuring flow velocities with the aid of ultrasonic vibrations, in which a first and a second ultrasonic measuring sections, each consisting of a transmitter and a receiver transducer, are arranged, and each of which has a propagation component oriented parallel to the direction of flow the ultrasonic vibrations in the flow direction or against the flow direction, solved, which is characterized by the features specified in the characterizing part of claim 1.
  • the invention offers the advantage that a relatively small outlay is required to implement such a device and that the "propagation speed" of the ultrasonic vibrations does not apply as a determining criterion for the flow rate to be measured. This in turn results in various technical advantages, such as the independence of the measuring method which can be carried out with the device according to the invention from the physical properties of the measuring medium.
  • the figure shows the basic structure of an exemplary embodiment of the invention with a flow channel 1, in which, in the manner shown, a first ultrasonic measuring section 6 and a second ultrasonic measuring section 7 are arranged crossing one another at an angle of attack ⁇ .
  • the first ultrasonic measuring section 6 consists of a first transmitting transducer 2, which transmits ultrasonic vibrations with a first frequency f1 over the length of the measuring section 1 to a first receiving transducer 3.
  • a second transmitter transducer 4 transmits ultrasonic vibrations with a second frequency f2 over the second ultrasonic measuring section 7 with the length 1 to a second receiving transducer 5.
  • a medium with an average flow velocity 7 flows through the flow channel 1. Ultrasonic vibrations are continuously transmitted via the two ultrasonic measuring sections 6, 7 .
  • a phase-locked loop PLL each provided for an ultrasound measuring section and not shown in the figure, with a corresponding voltage-controlled oscillator VCO ensures that a constant phase position in relation to the signal at the transmitter converter 2, 4 is set in each case on the receiving converter 3, 5.
  • a control signal to be obtained by phase comparison is given to the voltage-controlled oscillator mentioned, with which the latter generates a frequency which is adapted to the desired phase position.
  • the component of the ultrasonic beam parallel to the direction of flow spreads in the direction of flow, in the second ultrasonic measuring section it spreads out in the direction of flow.
  • the exact same number n of ultrasonic wave trains should fit on both ultrasonic measuring sections. This means that since both ultrasonic measuring sections are of equal length, the ultrasonic wavelength ⁇ should be the same size on both ultrasonic measuring sections.
  • An advantageous further development of the invention provides that a single ultrasonic measuring section is provided, in which the transducers are operated alternately as transmit transducers or receive transducers, so that alternately a propagation component of the ultrasonic vibrations in the flow direction or against the flow direction can be set, that alternately ultrasonic vibrations are transmitted with the first frequency and the second frequency and that in each case a signal corresponding to the first frequency and the second frequency is stored until the average flow velocity is derived.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Volume Flow (AREA)
EP79101689A 1978-06-30 1979-05-31 Dispositif de mesure de la vitesse d'écoulement à l'aide d'oscillations ultrasoniques Withdrawn EP0006464A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2828937 1978-06-30
DE19782828937 DE2828937A1 (de) 1978-06-30 1978-06-30 Vorrichtung zum messen von stroemungsgeschwindigkeiten mit hilfe von ultraschallschwingungen

Publications (2)

Publication Number Publication Date
EP0006464A2 true EP0006464A2 (fr) 1980-01-09
EP0006464A3 EP0006464A3 (fr) 1980-01-23

Family

ID=6043276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101689A Withdrawn EP0006464A3 (fr) 1978-06-30 1979-05-31 Dispositif de mesure de la vitesse d'écoulement à l'aide d'oscillations ultrasoniques

Country Status (6)

Country Link
EP (1) EP0006464A3 (fr)
JP (1) JPS559194A (fr)
DE (1) DE2828937A1 (fr)
DK (1) DK275479A (fr)
GB (1) GB2056064A (fr)
NL (1) NL7915034A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167857A (en) * 1984-11-30 1986-06-04 Robert James Redding Ultrasonic gas flow metering apparatus
EP0631114A2 (fr) * 1993-06-19 1994-12-28 Mms Space Systems Limited Procédé et système pour la mesure du débit massique ou de la vitesse d'écoulement d'un fluide
WO2016048135A1 (fr) * 2014-09-21 2016-03-31 Transus Instruments Pty Ltd Procédé de commande d'un débitmètre à ultrasons, débitmètre à ultrasons et système d'écoulement
NL1040960B1 (en) * 2014-09-21 2016-09-29 Transus Instr Pty Ltd Method to control an ultrasonic flowmeter, ultrasonic flowmeter and flow system.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3219788C2 (de) * 1982-05-25 1985-02-28 Siemens AG, 1000 Berlin und 8000 München Durchflußmengenmeßeinrichtung für Fluide und Durchflußmengenmengenmeßeinrichtung zur Verwendung als Wärmemengenzähler
DE3334819A1 (de) * 1983-09-26 1985-04-04 Siemens AG, 1000 Berlin und 8000 München Verfahren zur messung von stroemungsgeschwindigkeiten mit ultraschall
DE3411778A1 (de) * 1984-03-30 1985-10-03 Bopp & Reuther Gmbh, 6800 Mannheim Verfahren und vorrichtung zum messen der stroemungsgeschwindigkeit von fluiden mittels ultraschall
DE3633306A1 (de) * 1986-09-30 1988-03-31 Siemens Ag Schaltungsanordnung fuer ultraschall-durchflussmesser
DE3911408C2 (de) * 1989-04-07 1998-01-29 Siemens Ag Meßrohr für Ultraschall-Durchflußmessungen
DE4302368C1 (de) * 1993-01-28 1994-07-21 Spanner Pollux Gmbh Verfahren und Vorrichtung zur Ultraschall-Messung der Strömungsgeschwindigkeit von Fluiden
DE102006027422B4 (de) 2006-06-13 2014-02-06 Continental Automotive Gmbh Verfahren und Vorrichtung zum Überwachen eines Abgasturboladers
DE102010039606A1 (de) * 2010-08-20 2012-02-23 Endress + Hauser Flowtec Ag Ultraschall-Durchflussmessgerät und Verfahren zum Betreiben des Ultraschall-Durchflussmessgeräts

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826912A (en) * 1948-12-27 1958-03-18 Kritz Jack Acoustic velocity measuring system
US3420102A (en) * 1966-12-15 1969-01-07 Lockheed Aircraft Corp Acoustic fluid metering device
US3751979A (en) * 1971-11-17 1973-08-14 Raytheon Co Speed measurement system
DE2322749A1 (de) * 1972-05-05 1973-11-15 Saratoga Systems Verfahren und einrichtung zur stroemungsmessung
US3894431A (en) * 1972-04-04 1975-07-15 Atomic Energy Authority Uk Apparatus for indicating fluid flow velocity
US4003256A (en) * 1975-11-17 1977-01-18 Canadian Patents And Development Limited Acoustic oscillator fluid velocity measuring device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517117A1 (de) * 1975-04-18 1976-10-28 Standard Elektrik Lorenz Ag Anordnung zum bestimmen der stroemungsgeschwindigkeit von fluessigkeiten und gasen
DE2549636C2 (de) * 1975-11-05 1982-02-18 Mitsubishi Denki K.K., Tokyo Ultraschall-Strömungsmesser für eine Rohrleitung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826912A (en) * 1948-12-27 1958-03-18 Kritz Jack Acoustic velocity measuring system
US3420102A (en) * 1966-12-15 1969-01-07 Lockheed Aircraft Corp Acoustic fluid metering device
US3751979A (en) * 1971-11-17 1973-08-14 Raytheon Co Speed measurement system
US3894431A (en) * 1972-04-04 1975-07-15 Atomic Energy Authority Uk Apparatus for indicating fluid flow velocity
DE2322749A1 (de) * 1972-05-05 1973-11-15 Saratoga Systems Verfahren und einrichtung zur stroemungsmessung
US4003256A (en) * 1975-11-17 1977-01-18 Canadian Patents And Development Limited Acoustic oscillator fluid velocity measuring device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ULTRASONICS, Vol. 10, Nr. 5, September 1972, GUILDFORD: "Versatile flow meter", Seite 204. *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167857A (en) * 1984-11-30 1986-06-04 Robert James Redding Ultrasonic gas flow metering apparatus
GB2167857B (en) * 1984-11-30 1989-06-01 Robert James Redding Gas flow metering apparatus
EP0631114A2 (fr) * 1993-06-19 1994-12-28 Mms Space Systems Limited Procédé et système pour la mesure du débit massique ou de la vitesse d'écoulement d'un fluide
EP0631114A3 (fr) * 1993-06-19 1995-12-27 British Aerospace Procédé et système pour la mesure du débit massique ou de la vitesse d'écoulement d'un fluide.
WO2016048135A1 (fr) * 2014-09-21 2016-03-31 Transus Instruments Pty Ltd Procédé de commande d'un débitmètre à ultrasons, débitmètre à ultrasons et système d'écoulement
NL1040960B1 (en) * 2014-09-21 2016-09-29 Transus Instr Pty Ltd Method to control an ultrasonic flowmeter, ultrasonic flowmeter and flow system.
US10852169B2 (en) 2014-09-21 2020-12-01 Transus Instruments Pty Ltd Ultrasonic flowmeter and method of controlling an ultrasonic flowmeter by simultaneously driving a pair of transducers without correlation

Also Published As

Publication number Publication date
DE2828937A1 (de) 1980-01-10
GB2056064A (en) 1981-03-11
JPS559194A (en) 1980-01-23
DK275479A (da) 1979-12-31
NL7915034A (nl) 1980-08-29
DE2828937C2 (fr) 1988-07-14
EP0006464A3 (fr) 1980-01-23

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Inventor name: MAGORI, VALENTIN, DIPL.-PHYS.